Difference in wages#362
A small company employs a certain number of employees, but no fewer than two—the director and the chief accountant. Knowing the salaries of all employees, determine the difference between the smallest and the largest salary in the company.
A single line contains the salaries of the employees in hryvnias, separated by spaces. All input values are non-negative real numbers, separated by spaces. The number of salaries does not exceed .
Output a single number—the answer to the problem, rounded to two digits after the decimal point.
Example 1